"S, M, L, XL" refers to standard clothing sizes that indicate the fit of garments. These sizes stand for Small, Medium, Large, and Extra Large, respectively. They help consumers choose the right size for their body type, ensuring comfort and proper fit when wearing clothes. These size categories are commonly used in various clothing brands and styles, including shirts, pants, and dresses. While the exact measurements for each size can vary between brands, the general idea remains the same: to provide a simple way for shoppers to identify their preferred fit.